A Migrating Lesion After a Walk on the Beach: Your Dx?

July 2, 2014

A 6-year-old boy had a 1-month history of an intensely pruritic “rash” on the left dorsal foot and left lower leg. He had a recent history of walking barefoot on a beach in south Florida where dogs are allowed. What's your diagnosis?

A 6-year-old boy had a 1-month history of an intensely pruritic “rash” on the left dorsal foot and left lower leg. He had a recent history of walking barefoot on a beach in south Florida where dogs are allowed. The migrating lesion stopped just below the knee.

What’s your diagnosis?